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trommel
trom·mel T0376400 (trŏm′əl)n. A revolving cylindrical sieve used for screening or sizing rock and ore.
[German, from Middle High German trummel, diminutive of trumme, drum, probably of imitative origin.]trommel (ˈtrɒməl) n (Mining & Quarrying) a revolving cylindrical sieve used to screen crushed ore[C19: from German: a drum]trom•mel (ˈtrɒm əl)
n. a rotary, cylindrical or conical screen for sorting ore, coal, gravel, etc. [1875–80, Amer.; < German Trommel drum] trommel
trommel[′träm·əl] (mining engineering) A revolving cylindrical screen used to grade coarsely crushed ore: the ore is fed into the trommel at one end, the fine material drops through the holes, and the coarse is delivered at the other end. Also known as trommel screen. To separate coal into various sizes by passing it through a revolving screen. |